exclude starting '/' from file_url

Mapping

Renamed bengali language

[fix] Remove thumbnail on deletion and change Attach to small text

[fix] Module of Custom Field

[fix] Set filters based on pre-sets

[fix] Linked With should also search in Dynamic Links. Fixes #1192

[fix] Don't add emails to CC if no CC added from the UI. Fixes frappe/erpnext#4164

Limit varchar length to 140 instead of 255 to mitigate Row Size Too Large error

[enhancement] added 'make_thumbnail' to File and will be saved as thumbnail_url

[minor] fixes with Email Digest, get_url_to_form

[minor] [fix] don't sort recent documents in awesome bar

[new languages] bn, da-DK, es-PE, si