Fix javascript errors

Fix the javascript errors that 1.3.2 introduced #141 #142 #143

Better manual analysis

New features and bugfixes around manual analysis of gcode:

• Manual analysis is working again. Bug #136
• You can select multiple items to analyze. Bug #123
• They are sorted with unanalyzed first and then alphabetically. Bug #131

Italian translation and bugfixes

• Translation. Only Italian so far.
• Bug #128 Fixed analyzing of Cura4.1 files
• Bug #121 Fix errors on files that analyze too quickly

Slic3r PE M73, Analyze while heating, and busy indicator

New features

• Slic3r PE M73 support (#79)
  You can enable this in the options. It will attempt to use Slic3r PE's M73 comments to get remaining time estimates. You must still keep the Marlin simulation enabled for calculating the volume and filament length so don't turn those off.
• Allow analysis while heating (#83)
  This will keep analyzing after you start printing up until all the heaters reach working temperature. This shouldn't affect printing performance like analyzing while printing does. It is on by default.
• Analyzing indicator (#89)
  The gold star will flash next to the name of the file currently being processed. it stops flashing when analysis is done.

Bugfixes

• Misaligned stars in File Manger (#93)
  Fixed the cosmetic issue for users with both PrintTimeGenius and File Manager installed.

How to help

As usual, code, testing, feature requests, and bug reports are appreciated.

Add support for firmware retraction in marlin-calc

marlin-calc can now calculate firmware retractions, too. This fixes #77

More large file support

More improvements for #67 . subprocess doesn't poll properly so I've switched to use python sarge.

Faster gcode analysis for large files

File analysis speed is improved by about 33% and memory usage decreases drastically, by a factor of 1500 on large files.

Fix jittering, stuttering prints

Sometimes printing would pause for a moment every few seconds due to too much processing in the remaining time update. That code was optimized to run faster. File an issue if the actual time to print an object to slower with PTG than without.

As usual, if marlin-calc is giving bad estimates, let me know. Or if it's giving great estimates and you want to say thanks, I like to hear those, too!

Enjoy.

Bugfixes

I accidentally stripped periods from the printer config so the values were often way off, especially the volume of prints. It should be okay now and it passes unit tests. #63

Minor features and fixes

Features

• Display progress as percentage of time, not file progress. #61
• New button to remove print history rows in case there are atypical rows that are throwing off the estimate (don't forget to save settings after removing a row). #45

Bugfixes

• Fix calculation of total extruded filament. #63

As usual, if you see really bad estimates, let me know. Also, if you see really wonderful estimates, it makes me happy to hear about it!