Fixed double opening of action=FOLDERS whe clicking "Import archive" (closes #3703)

When the "Import archive" menu was clicked, a new window was opened with
`app=FREEDOM&action=FOLDERS` in it.
Merge pull request #715 from eguaj/3.2-A3703

Fixed double opening of action=FOLDERS whe clicking "Import archive" (closes #3703)
Change checkDate function to accept older date even in 32bit (closes #3720)
CHange button size and overflow for ie (closes #3727)
Merge pull request #716 from thingthing/3.2-I3720

Change checkDate function to accept older date even in 32bit (closes #3720)
Merge pull request #718 from thingthing/3.2-I3727

CHange button size and overflow for ie (closes #3727)
Correct datePicker year range (closes #3721)
    + Put year range from 1000 to 9999
    + Error message when trying to show picker with year < 1000
    + Traduction of error message
Merge pull request #717 from thingthing/3.2-I3721

Correct datePicker year range (closes #3721)
Onclick div constraint close text (closes #3719)
Merge pull request #719 from thingthing/3.2-I3719

Onclick div constraint close text (closes #3719)
Beautify generic list (refs #3693)
Accelerate menu generation (refs #3693)

Suppress js add class
Add class in PHP
Beautify barmenu (refs #3693)
Correct menu loading on old browser (closes #3693)

Patch menu widget to add an ampty jquery object as selected if is undefined
Add a loader during menu generation
Corrected HTML title injection in lfamily() (closes #3713)

Also:
- Corrected HTML title injection in fdlGetAccounts()
Corrected HTML title injection in EDITMAIL (refs #3713)
Corrected HTML title injection in EDITMAIL doc preview (refs #3713)
Added htmlescape() function in common.js (refs #3713)

It's the JS equivalent of PHP's htmlspecialchars().
Corrected HTML title injection in RNAVIGATE (refs #3713)
Corrected HTML title injection in FREEDOM_IFLD (refs #3713)