Add fomod installer support

Option types are not validated - contradicting group and
option types should be undefined behaviour.
However, to simplify, option type always wins the conflict
and we deliver a warning if needed.

As an example, in a SelectAll group a NotUsable option
would not be selected.

Remove fomod metadata handling

Rework fomod installer backend

Changed:
  - User's choices are now "saved" when going to previous pages
  - Folders to install are now properly merged based on priority
  - Omitted destination attributes in file/folder tags are now
    properly handled.

TODO:
  - Update tests in test_bash repo
  - Add some inline documentation

This must go into the final commit message:

Ignored tags:
  - moduleImage
  - fommDependency

Ignored attributes:
  - position, colour - [moduleName]
  - alwaysInstall, installIfUsable - [file, folder]

Note:

Rework exe-based game detection logic FFF fomods

@@ -64,3 +64,3 @@ def __init__(self, parent_window, installer, page_size, pos):
         data_path = bass.dirs["mods"]
-        ver = env.get_file_version(bass.dirs["app"].join(bush.game.exe).s)
+        ver = env.get_file_version(bass.dirs["app"].join(bush.game.launch_exe).s)
         game_ver = u".".join([unicode(i) for i in ver])

Some wx cleanup in gui fomods

Cache images it does speedup loading them

(although that's probably due to my using balt.Image)

FFF couple typos

FileInfo(object): -> _FomodFileInfo(object): FFF WIP

Infernio: Updated for 'Rework game version calculation'

SSS Improve FOMOD installer link name

Should be FOMOD or FOMod, not Fomod. Also added three dots, since that
link opens an interactive dialog.

SSS to be squashed into the final FOMOD commit

_text = _(u'FOMOD Installer...') class variable SSS

No need to override __init__

Remove some leftover debug prints

Replace PageInfo with OrderedDict

Std lib is better. Port of dh-nunes/pyfomod@547494309

Add some docs to the fomod backend

Author: Daniel Nunes

Mopy/bash/balt.py

@@ -840,9 +840,10 @@ def vistaDialog(parent, message, title, buttons=[], checkBoxTxt=None,
                 return id_
     return None, checkbox
 
-def askStyled(parent,message,title,style,**kwdargs):
+def askStyled(parent, message, title, style, do_center=False, **kwdargs):
     """Shows a modal MessageDialog.
     Use ErrorMessage, WarningMessage or InfoMessage."""
+    if do_center: style |= wx.CENTER
     if canVista:
         buttons = []
         icon = None

Mopy/bash/basher/__init__.py

@@ -2707,6 +2707,9 @@ def SetFile(self, fileName='SAME'):
                 self.gSubList.Clear()
             else:
                 balt.setCheckListItems(self.gSubList, [x.replace(u'&',u'&&') for x in installer.subNames[1:]], installer.subActives[1:])
+            if installer.has_fomod_conf:
+                self.gSubList.Insert("fomod", 0)
+                self.gSubList.Check(0, installer.extras_dict.get('fomod_active', False))
             #--Espms
             if not installer.espms:
                 self.gEspmList.Clear()
@@ -2851,8 +2854,16 @@ def OnCheckSubItem(self,event):
         installer = self.file_info
         index = event.GetSelection()
         self.gSubList.SetSelection(index)
+        has_fomod = False
+        if self.gSubList.GetString(0) == "fomod":
+            installer.extras_dict['fomod_active'] = self.gSubList.IsChecked(0)
+            self.gSubList.Delete(0)
+            has_fomod = True
         for index in range(self.gSubList.GetCount()):
             installer.subActives[index+1] = self.gSubList.IsChecked(index)
+        if has_fomod:
+            self.gSubList.Insert("fomod", 0)
+            self.gSubList.Check(0, installer.extras_dict.get('fomod_active', False))
         if not balt.getKeyState_Shift():
             self.refreshCurrent(installer)