Feature generation

[Iceman-bfw]

Implemented new structure to Flow-Py:

• seperated GUI from main.py and PyQt imports are only done if needed
• changed flow_core.py to only have one calculation function, and let the infrastructure part optional if infra_bool is True
• in flow_core.py: implemented a generation list, as a parent of the cell_list. cell_list now has only the cells of the current generation, stores them after calculation in gen_list as list.
• in flow_class.py: erased the mass_distribution part, didn't worked how expected and actually no need for it

[pep8speaks]

Hello @Iceman-bfw! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file flow_class.py:

Line 199:80: E501 line too long (178 > 79 characters)

• In the file flow_core.py:

Line 88:1: W293 blank line contains whitespace
Line 97:80: E501 line too long (85 > 79 characters)
Line 108:1: W293 blank line contains whitespace
Line 115:8: E111 indentation is not a multiple of four
Line 115:80: E501 line too long (85 > 79 characters)
Line 115:86: W291 trailing whitespace
Line 130:80: E501 line too long (89 > 79 characters)
Line 131:1: W293 blank line contains whitespace
Line 138:53: E261 at least two spaces before inline comment
Line 146:1: W293 blank line contains whitespace
Line 166:33: E261 at least two spaces before inline comment
Line 166:80: E501 line too long (113 > 79 characters)
Line 167:80: E501 line too long (134 > 79 characters)
Line 167:104: E261 at least two spaces before inline comment
Line 172:1: W293 blank line contains whitespace
Line 173:80: E501 line too long (92 > 79 characters)
Line 176:80: E501 line too long (95 > 79 characters)
Line 189:80: E501 line too long (94 > 79 characters)
Line 192:80: E501 line too long (97 > 79 characters)
Line 206:80: E501 line too long (99 > 79 characters)
Line 210:80: E501 line too long (142 > 79 characters)
Line 212:36: W291 trailing whitespace
Line 213:39: W291 trailing whitespace
Line 216:1: W293 blank line contains whitespace
Line 217:35: E261 at least two spaces before inline comment
Line 219:80: E501 line too long (124 > 79 characters)
Line 220:80: E501 line too long (104 > 79 characters)
Line 224:80: E501 line too long (124 > 79 characters)
Line 225:80: E501 line too long (88 > 79 characters)
Line 226:80: E501 line too long (124 > 79 characters)
Line 227:80: E501 line too long (87 > 79 characters)
Line 229:13: E265 block comment should start with '# '
Line 232:21: E265 block comment should start with '# '
Line 236:80: E501 line too long (128 > 79 characters)
Line 236:129: W291 trailing whitespace
Line 237:80: E501 line too long (115 > 79 characters)
Line 241:76: W291 trailing whitespace
Line 245:1: W293 blank line contains whitespace
Line 254:80: E501 line too long (93 > 79 characters)
Line 259:25: W291 trailing whitespace

• In the file gui.py:

Line 46:1: W293 blank line contains whitespace
Line 47:37: W291 trailing whitespace
Line 51:1: W293 blank line contains whitespace
Line 63:9: E265 block comment should start with '# '
Line 64:9: E265 block comment should start with '# '
Line 83:1: W293 blank line contains whitespace
Line 87:1: W293 blank line contains whitespace
Line 107:1: W293 blank line contains whitespace
Line 113:1: W293 blank line contains whitespace
Line 118:13: E265 block comment should start with '# '
Line 119:1: W293 blank line contains whitespace
Line 126:80: E501 line too long (82 > 79 characters)
Line 131:1: W293 blank line contains whitespace
Line 135:13: E722 do not use bare 'except'
Line 137:1: W293 blank line contains whitespace
Line 140:13: E722 do not use bare 'except'
Line 142:1: W293 blank line contains whitespace
Line 145:13: E722 do not use bare 'except'
Line 147:1: W293 blank line contains whitespace
Line 150:13: E722 do not use bare 'except'
Line 152:1: W293 blank line contains whitespace
Line 155:13: E722 do not use bare 'except'
Line 163:80: E501 line too long (84 > 79 characters)
Line 164:59: E127 continuation line over-indented for visual indent
Line 165:59: E127 continuation line over-indented for visual indent
Line 165:80: E501 line too long (83 > 79 characters)
Line 174:80: E501 line too long (94 > 79 characters)
Line 183:80: E501 line too long (98 > 79 characters)
Line 190:80: E501 line too long (84 > 79 characters)
Line 192:80: E501 line too long (96 > 79 characters)
Line 206:80: E501 line too long (109 > 79 characters)
Line 207:80: E501 line too long (86 > 79 characters)
Line 210:80: E501 line too long (87 > 79 characters)
Line 240:80: E501 line too long (86 > 79 characters)
Line 244:1: W293 blank line contains whitespace
Line 253:13: E116 unexpected indentation (comment)
Line 261:80: E501 line too long (104 > 79 characters)
Line 276:80: E501 line too long (85 > 79 characters)
Line 277:80: E501 line too long (84 > 79 characters)
Line 284:80: E501 line too long (101 > 79 characters)
Line 293:80: E501 line too long (101 > 79 characters)
Line 296:80: E501 line too long (93 > 79 characters)
Line 301:9: E722 do not use bare 'except'
Line 305:1: W293 blank line contains whitespace
Line 309:1: W293 blank line contains whitespace
Line 312:33: E261 at least two spaces before inline comment
Line 313:1: W293 blank line contains whitespace
Line 315:1: W293 blank line contains whitespace
Line 316:80: E501 line too long (92 > 79 characters)
Line 317:80: E501 line too long (110 > 79 characters)
Line 319:80: E501 line too long (100 > 79 characters)
Line 320:1: W293 blank line contains whitespace
Line 327:1: W293 blank line contains whitespace
Line 340:1: W293 blank line contains whitespace
Line 343:68: W291 trailing whitespace
Line 344:80: E501 line too long (82 > 79 characters)
Line 349:80: E501 line too long (86 > 79 characters)
Line 369:80: E501 line too long (106 > 79 characters)
Line 372:80: E501 line too long (109 > 79 characters)
Line 375:80: E501 line too long (117 > 79 characters)
Line 378:80: E501 line too long (117 > 79 characters)
Line 382:80: E501 line too long (117 > 79 characters)
Line 385:80: E501 line too long (117 > 79 characters)
Line 389:80: E501 line too long (121 > 79 characters)
Line 394:80: E501 line too long (81 > 79 characters)
Line 397:1: W293 blank line contains whitespace
Line 398:1: E305 expected 2 blank lines after class or function definition, found 1
Line 399:19: W292 no newline at end of file

• In the file main.py:

Line 39:24: W291 trailing whitespace
Line 222:24: W291 trailing whitespace
Line 234:80: E501 line too long (144 > 79 characters)
Line 235:80: E501 line too long (197 > 79 characters)